package com.qq4j;import org.springframework.beans.factory.annotation.Value;import com.qq4j.openapi.QQClient;public class QQService {	@Value("#{properties['qq.client.id']}")	private String qqClientId;	@Value("#{properties['qq.client.secret']}")	private String qqClientSecret;	private static QQClient qqClient;	public QQClient getQQClient() {		if (qqClient == null) {			qqClient = new QQClient(qqClientId, qqClientSecret);		}		return qqClient;	}}